A network "switch" should always be used in preference to a "hub" but these are for *WIRED* ethernet networking.
If you are going to connect the player to the internet "wirelessly", and require a data transfer speed of at least 100Mbps, then you need to use an 802.11n Router and an 802.11n Wireless Network Adapter in the player both of which support a 300Mbps connection. Some 802.11n hardware is only 150Mbps which, in practice, may not deliver 100Mbps. You might have to use a dedicated Sony USB adapter in the player.
Having said that, I cannot see why the network needs to be "at least 100Mbps" when most people's internet connection is unlikely to be even 10Mbps.